Chroma processing for video encoding and decoding

3. The method of claim 2, wherein encoding the scaling index comprises including the scaling index as a syntax element of an encoded bitstream produced by the encoding.

4. The method of claim 2, wherein encoding the scaling index comprises encoding the scaling index for at least one structural entity.

7. The method of claim 6, wherein determining the scaling index comprises determining the scaling index from a syntax element of an encoded bitstream including the picture information.

8. The method of claim 6, wherein determining the scaling index comprises determining the scaling index for at least one structural entity.

9. The method of claim 8, wherein the at least one structural entity comprises at least one of a CTU, or a VDPU, or a CU, or a TU, or a slice, or a tile, or a brick, or a quantization group, or a plurality of non-overlapping areas of size Wc*Hc, where Wc and Hc are either pre-defined values or values signaled in the bitstream.

11. A non-transitory computer readable medium storing executable program instructions to cause a computer executing the instructions to perform a method according to claim 5.

14. The apparatus of claim 13, wherein the one or more processors being configured to encode the scaling index comprises the one or more processors being further configured to include the scaling index as a syntax element of an encoded bitstream produced by the encoding.

15. The apparatus of claim 13, wherein the one or more processors being configured to encode the scaling index comprises the one or more processors being further configured to encode the scaling index for at least one structural entity.

18. The apparatus of claim 17, wherein the one or more processors are further configured to determine the scaling index from a syntax element of an encoded bitstream including the picture information.

19. The apparatus of claim 17, wherein the one or more processors being configured to determine the scaling index comprises the one or more processors being configured to determine the scaling index for at least one structural entity.

20. The apparatus of claim 19, wherein the at least one structural entity comprises at least one of a CTU, or a VDPU, or a CU, or a TU, or a slice, or a tile, or a brick, or a quantization group, or a plurality of non-overlapping areas of size Wc*Hc, where Wc and Hc are either pre-defined values or values signaled in the bitstream.

22. The apparatus of claim 16, further comprising at least one of (i) an antenna configured to receive a signal, the signal including data representative of the image information, (ii) a band limiter configured to limit the received signal to a band of frequencies that includes the data representative of the image information, and (iii) a display configured to display an image from the image information.

23. The apparatus of claim 22, wherein the apparatus comprises one of a television, a television signal receiver, a set-top box, a gateway device, a mobile device, a cell phone, a tablet, or other electronic device.